Medium 5.3Published Apr 10, 2026

CVE-2026-33737Chamilo LMS has an XML External Entity (XXE) Injection

Updated under an hour ago (Oct 26, 2026, 6:40 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for chamilo-lms

Exploited in the last 30 days

Chamilo LMS is a learning management system. Prior to 1.11.38 and 2.0.0-RC.3, multiple files use simplexml_load_string() without XXE protection. With LIBXML_NOENT flag, arbitrary server files can be read. This vulnerability is fixed in 1.11.38 and 2.0.0-RC.3.

CVSS: 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE): CWE-611
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Apr 13, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

chamilo chamilo-lms chamilo:lms (from the name)	before 1.11.38; from 2.0.0-alpha.1, < 2.0.0-RC.3	CNA record
chamilo chamilo_lms chamilo:chamilo_lms	before 1.11.38; 2.0.0; 2.0.0; 2.0.0; 2.0.0; 2.0.0; 2.0.0; 2.0.0; and 3 more ranges	NVD

References

https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-c4ww-qgf2-v89jx-refsource-confirm, vendor-advisory
https://github.com/chamilo/chamilo-lms/commit/22b1cb1c609b643765c88654155aba27070c927ex-refsource-misc, patch
https://github.com/chamilo/chamilo-lms/commit/af6b7002af7c15825e98fc522e2ead0d00cacaa3x-refsource-misc, patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.